Crunching the numbers to pick the 10 best custom motorcycles of the year is a headache. But picking my personal favorites is even harder—especially when you consider the caliber of the machines that we regularly feature. As has become my process, I start with a short list of 30 to 40 bikes, then spend a few days whittling that down to a manageable size. To level the playing field, any bikes that are already highlighted in our ranked Top 10 are eliminated, and the remaining candidates are sh...